21. Non ideal gases approach ideal behaviour

1. 1. high temperature and high pressure

   
   
   

   2. high temperature and low pressure

   
   
   

   3. low temperature and high pressure

   
   
   

   4. low temperature and low pressure

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

---

22. When the universal gas constant (R) is divided by Avogadro's number (N), their ratio is called

1. 1. Planck's constant

   
   
   

   2. Rydberg's constant

   
   
   

   3. Boltzmann's constant

   
   
   

   4. van der Wall's constant

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

---

---

23. Vander Wall's equation explains the behaviour of

1. 1. ideal gases

   
   
   

   2. real gases

   
   
   

   3. mixture of gases

   
   
   

   4. diatomic gases

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

---

24. What are the physical state of dispersion medium of a cloud ?

1. 1. Solid

   
   
   

   2. Liquid

   
   
   

   3. Gas

   
   
   

   4. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

---

---

25. Which one of the following is not the value of R ?

1. 1. 1.99 cal K^-1 mol^-1

   
   
   

   2. 0.821 litre atm K^-1 mol^-1

   
   
   

   3. 9.8 Kcal K^-1 mol^-1

   
   
   

   4. 8.3 JK^-1 mol^-1

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

---